Electrodynamics of DNA and artificial DNA-like structures

Abstract

Investigations of polarization properties of DNA molecules are considered to be of primary importance due to mirror asymmetry of the shape of DNA. Preliminary theoretical calculation has shown that the shape of DNA is optimum for its radiation of a circularly electromagnetic wave under the resonance condition when the wave length is approximately equal to 10 nm. The molecule of DNA takes a special place among other chiral objects owing to the property of polarization selectivity. The effect of polarization selectivity of interaction of the DNA molecule with right-circularly and left-circularly waves in a vacuum ultraviolet range can reach 100 per cent. This statement has been proved by the example of metal DNA-like helices in a microwave range following to the principle of scaling. The effect of polarization selectivity of DNA-like helices which means that left-handed circularly polarized microwaves interact with right-handed DNA-like helical elements more efficiently than right-handed circularly waves has been proved experimentally. These results are of interest in connection with the opportunity of producing artificial 2D and 3D structures on the basis of DNA molecule branches. Such structures can be into a basis of new type metamaterials.